1872.] 



change of Climate on the Human Economy. 



3 



Table II. shows : — First. That this law prevails between the ages of 14| 

 and 62, and therefore doubtless at all ages. 



Second. That the rise and fall are greatest at the prime, and decrease 

 towards either extreme of life. 



Third. That at all ages, and for the same reason, the rise and fall are 

 greatest in those of largest frame and most full-blooded. 



Fourth. That for the same reason this rise and fall are greater, cceteris 

 paribus, above than under puberty (marked *), and subsequently in- 

 crease with the growth of the frame. 



Fifth. That the normal expansion of the lungs and chest from growth 

 only lessens slightly the spirometric reduction under cold, which often 

 falls below its original standard. 



Sixth. That after mid age the rise and fall, like the spirometric measure- 

 ment itself, diminish with the progressive decav of the frame (cases 68 

 to 73). 



Seventh. That in extreme old age (case 74) the shrivelling and less 

 vascular lungs, skin, body, di mini shing chest (cases 68, 71), respiratory 

 and circulatory functions lessen and finally counterbalance the law. 



Eighth. That obesity, i. e. an increased bulk of body, does not interfere 

 with the last-mentioned effect of advancing age (case 69). 



Ninth. That the rise and fall are not materially interfered with by an 

 ordinary catarrh (case 55) or asthma (case 56). 



The only exceptions to the law among the 47 cadets were (case 16) a 

 suspicious chest, which gave no primary increase under heat ; and case 

 41, which, instead of decreasing under cold, increased by 4 cubic inches 

 by unusually rapid chest expansion from growth. 



Table II. Climatic Spirometric range at different ages. 







South Temperate Zone. 





Tropics. 





North Temp 

 Lat. 50° IS". ; T( 



erate Zone. 



No. 





Lat. 35° S. ; Temp. 55°-65° F. 



Near Equator : Temp. 82° F. 



mp. 52°-56° F. 



Age. 





July 16, 1871. 







Aug. 31, 1871. 







Nov. 2, 



1871. 









Weight. 



Height., Chest. Spirom. 



Weight. 



Height. Chest. 



Spirom. 



Weight. 



Height. 



Chest. 



Spirom. 







lbs. 



ft. in. 



in. 



cub. in. 



lbs. 



ft. in. in. 



cub. in. 



lbs. 



ft in. 



in. 



cub. i n . 



I*. 



14*6 



88 

 118 



4 4 



**i 



Ill 



8 9 



4 7i\ *8£ 



"5 



95 



4 H 



29 



Ill 



2#. 



14-8 



5 3f 



3*i 



186 



119 



5 4 ! 33 



202 



120 



5 4i 



33 



*95 



3*. 



14TI 



99 



5 2 



3°* 



147 



100 



5 afj 3°¥ 



156 



101 



5 ** 



3°^ 



141 



4*. 



15-1 



97 



5 2 £ 



30 



171 



100 



5 all 3°i 



i g 3 



IOI 



5 3 



3°i 



163 



5*. 



15*3 



"5 



5 4 



33 



180 



116 



5 4-i ' 34 



J 95 



"S 



5 4i 



34i 



186 



6*. 



i5"4 



119 



5 5* 



3*1 



189 



116 



5 6 j 33^ 



201 



121 



5 H 



332 



192 



7*. 



I5-4 



98 



5 4* 



3° 



174 



98 



5 4il 3° 



186 



95 



5 4i 





165 



8. 



15-6 



122 



5 5s 



h 



199 



1 124 



5 6 3 2| 



207 



125 



5 H 



3*1 



198 



9*- 



T 5 -6 



121 



5 4 





141 



109 



5 3tj 3ii 



165 



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5 4i 



3i| 



156 



ro#. 



15-6 



96 



4 11 



3°¥ 



141 



94 



4 3°i 



153 



97 



4 "1 



3°# 



141 



ii*. 



15-6 



100 



5 3i 



3°£ 

 33i 



158 



95 



5 4 j 3°i 



168 



98 



5 4 



3°i 

 33i 



162 





156 



122 



5 Si 

 4 9i 



186 



120 



5 6 33* 



201 



119 



5 6 



195 



13*. 



15-6 



99 



3° 



150 



88 



4 ioi 3of 



165 



92 



4 10 



3 if 



162 



[4. 



157 



153 



5 9 



3 6 2 



237 



150 



5 H\ 3*i 



261 



158 



5 9i 



37 



256 



15- 



157 



122 



5 U 



3*1 



213 



118 



5 9 33i 



240 



118 



5 9 



34 



225 



16*. 



157 



i°5 



5 4 



a8| 



162 



100 



5 3* **l 



162 



106 



5 3* 





159 



'7- 



157 



141 



5 7 



35i 



226 



138 



5 7 i 3 Si 



237 



137 



5 7 



351 



220 



8*. 



15-8 



110 



5 4 



3°i 



168 



105 



5 4 | 3 1 * 



175 



106 



5 4i 



3i* 



165 



B 2 



